Ruling · Rukmiṇī Dvādaśī · 1970

Monday 18 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 42 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Sunday 17 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
Dvādaśī begins 13:20:17
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Monday 18 May

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

48 of 48 minutes covered

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 13:20 on Sun 17 May to 13:57 on Mon 18 May.

    1970-05-17T05:20:17Z → 1970-05-18T05:57:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 17th, 11:51–12:39 on the 18th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 2495 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Baoding, 1970: Monday 18 May.

    confidence: determinate

Say it like this

In Baoding, Rukmiṇī Dvādaśī 1970 falls on Monday 18 May. Dvādaśī runs from 13:20 on Sun 17 May to 13:57 on Mon 18 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1970/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 18 May
Ahargaṇa, classicalDisc centre, no refractionMon 18 May
compat-drikpanchangComparison profileSun 17 May
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/rukmini-dvadashi · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 102

“S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles22:20 → 22:5712:2548 min12:260 min17 May
Chicago00:20 → 00:5712:2348 min12:230 min17 May
Jersey City01:20 → 01:5712:2948 min12:290 min17 May
Port of Spain01:20 → 01:5711:3848 min11:380 min17 May
London06:20 → 06:5712:3348 min12:330 min17 May
Durban07:20 → 07:5711:2848 min11:280 min17 May
Dubai09:20 → 09:5711:5148 min11:510 min17 May
Delhi10:50 → 11:2711:5448 min11:540 min17 May
Kolkata10:50 → 11:2711:0948 min11:0918 min17 May
Singapore12:50 → 13:2712:075 min12:0748 min17 May
Sydney15:20 → 15:5711:270 min11:2748 min18 May
Suva17:20 → 17:5711:390 min11:3948 min18 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rukmini-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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